Effect of vascular occlusion on radiofrequency ablation of the liver: results in a porcine model.
作者： Steven B. Chinn , Fred T. Lee , Gregory D. Kennedy , Cynthia Chinn , Christopher D. Johnson
DOI: 10.2214/AJR.176.3.1760789
关键词: Necrosis 、 Portal vein 、 Radiofrequency ablation 、 Lesion volume 、 Occlusion 、 Vascular occlusion 、 Anatomy 、 In vivo 、 Medicine 、 Nuclear medicine 、 Artery
摘要: OBJECTIVE. This study determined the effect of vascular occlusion on radiofrequency lesion shape, volume, and temperature in a porcine liver model.SUBJECTS AND METHODS. Radiofrequency lesions (n = 33) were created livers six domestic pigs vivo using multiprong electrode. Lesions randomly assigned to one four groups: portal vein, hepatic artery, Pringle maneuver (both artery vein), or no occlusion. parameters time, 7 min; power, 50 W; target temperature, 100°C. Temperatures measured 5, 10, 15 mm from After animals sacrificed, excised. Lesion diameter, shape; maximum temperature; time exposed lethal temperatures (42-60°C) determined.RESULTS. volume was greatest with (12.6 ± 4.8 cm3), followed by vein (8.6 3.8 (7.6 2.9 occlu...
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